srecord noeq Tok_IdentifierSemicolonToReturnStatement(LS tok) {
  Set<S> exceptions = defaultExceptions;
  static Set<S> defaultExceptions = litset("break", "continue", "return", "else", "endifdef", "endif");
  Set<S> precedingTokens = defaultPrecedingTokens;
  static Set<S> defaultPrecedingTokens = litset("}", ";");
  
  TokCondition cond = new {
    public bool get(L<S> tok, int nIdx) {
      ret contains(precedingTokens, _get(tok, nIdx-1))
        && !contains(exceptions, tok.get(nIdx+1));
    }
  };
    
  run {
    for (S pre : precedingTokens)
      jreplace(tok, "<id>;", "ret $1;", cond);
  }
}

Began life as a copy of #1035525